6.3 – Technology for Preventing Cyber-Intrusion

Firewall – Firewall is a set of related programs, located at network gateway, which helps to protect networks from outside (public network or from Internet) attacks. Any organization with internet connection that allows access from outside network uses firewall to protect itself. Firewall makes it possible that an organization can make its contents accessible from outside while restricting those it does not want to make publicly accessible. Basically firewall stands near the router and checks for all incoming and outgoing traffics. Firewall contains sets of rules which control all internal and outside traffics. Look at the diagram below which shows how…